20851 - Lustrous Titanite (Sphene) Crystals - Imilchil Mine Morocco Euloma Gold and arsenic occur as
Yard notes & kiln story
Description
Gold and arsenic occur as a coupled substitution in the pyrite structure
It is very common to find fish vertebrae in the Cretaceous sites in the south of Morocco
Beautiful specimen of a meteorite of chondritic type coming from an undetermined fall in the Sahara desert (Western Sahara)
Its tooth are tremendously sharp and present a slight curvature
High quality specimen
20851 - Lustrous Titanite (Sphene) Crystals - Imilchil Mine Morocco Euloma Gold and arsenic occur asTitanite, or sphene, is a calcium titanium nesosilicate mineral, CaTiSiO5. Trace impurities of iron and aluminium are typically present. Also commonly present are rare earth metals including cerium and yttrium; calcium may be partly replaced by thorium.